Kirk and company are trapped in a bizarre re-creation of the ancient American West and forced to fight in the gunfight at the OK Corral.
The Enterprise must transport Elaan, the beautiful Dohlman of Elas, to an arranged marriage on planet Troyius.
Kirk loses his memory on a peaceful planet inhabited by descendants of American Indians.
Kirk and Spock are captured while on a secret mission to steal a new Romulan cloaking device.
Children who have survived the bizarre death of their parents are possessed by the evil spirit that killed their parents.
A mysterious woman steals Spock's brain.
A beautiful woman escorts an alien ambassador so ugly that the sight of him can drive a human mad.
Kirk, Spock, McCoy, and an alien woman are brutally tortured in a test of the woman's worthiness to be have her race saved from an exploding star.
Kirk disappears, presumed dead, and Spock tries to keep the Enterprise from being a victim of a web-like alien device.
Dr. McCoy, stricken with a fatal illness, finds love on a doomed asteroid spacecraft.
The Enterprise crew and a group of Klingons are trapped by an energy creature that feeds on hatred.
Enterprise crew members are held captive by psychokinetic powers.
The Enterprise is commandeered by aliens who exist in a hyperaccelerated time frame.
Enterprise crew members are stranded on a ghost planet and terrorized by the image of a beautiful woman
Two men from a dead world are unable to shake the racial hatred that destroyed their world.
Kirk and Spock are help captive in an insane asylum by a former Starfleet hero.
Captain Kirk is held captive on a duplicate of the Enterprise by people who hope he holds the solution to their planet's overpopulation.
At planetoid Memory Alpha, an Enterprise crew member's body is taken over by mysterious energy life-forms.
Kirk and Spock must deal with terrorists striking at the beautiful cloud city Stratos.
The Enterprise is hijacked by a group of renegades who have rejected modern technological life to search for the mythical planet of Eden.
An immortal man tries to build the perfect woman, but she falls in love with Kirk instead.
Kirk and Spock are forced to fight alongside such historical figures as Abraham Lincoln of Earth and Surak of Vulcan By aliens who want to study the human concept of "good" and "evil".
Spock and McCoy are trapped in a planet's distant past, where Spock finds love with am exiled woman.
Kirk is kidnapped by a woman scientist who places her consciousness in his body, then traps his in hers.
